Climatealigned | Onsite | London

We've spent the last two years making climate finance data at a fraction of the time and cost using AI. We started pre GPT and have continued to evolve and rebuild our stack with the times. These days we are fully agentic, powered by opus/haiku using python/js as best fits the job, but we ride the wave and aren't attached to the past. We are a small, focused, in-person, and technically capable team with deep industry connections.

We are looking for an early career builder to take ownership of end to end data creation, and who can stay on their toes with rapidly changing tech stack and ways of working as the models continue to evolve.

Reach out to our CEO aleksi[at]climatealigned[dot]co to discuss, or drop me a line (founding engineer)

Check some of our past work at https://climatealigned.co or touch base with any of the team with questions on LI

telli is hiring engineers & designers [on-site, Berlin] - https://hi.telli.com/join-us

Arenko (energy transition/batteries and renewables) | London, UK | 2x/week in office

We work on industrial/grid-scale batteries and other renewable generation: monitoring, managing and trading them on multiple energy markets. Batteries like these: https://en.wikipedia.org/wiki/Battery_energy_storage_system Everyone starting from the C-suite is passionate about addressing climate change and transitioning to renewable energy!

We're a small team of 7 backend engineers atm (other teams have Ops, FE and DS roles). We have paying customers and have been around for 10 years. Our current goal is to make the platform more scalable to deal with the customer growth and move to new markets. The biggest challenge is understanding how the various energy markets and energy storage in general work and then translating that to reliable working software.

We're currently looking for a few Senior Backend Engineers (Go), a Senior Data Engineer and a Senior Infrastructure Engineer. Our office is in London Blackfriars and most engineers come in about 2 days a week, but this is flexible.

Feel free to message me with any questions or apply directly:

https://arenko.bamboohr.com/careers?source=hn

https://arenko.group/careers/

CLASSIC.COM | Software Engineer (Elixir) | Remote (Eastern Timezone) | Full Time | https://www.classic.com

We are building CLASSIC.COM a comprehensive platform for classic, collectible, and rare automobiles. As a leader in our vertical, our platform serves millions of users, and we are seeking two Software Engineers to help take our systems to the next level.

The Software Engineer (Elixir) will work in our Experience Team, which builds the complete experience for our customers. You'll use Phoenix + LiveView to build fast, modern, and efficient user experiences, and help continue to roll out Elixir to the rest of the organization. For more details or to apply, reach out to me at luke @ the company domain.

If you reach out from Hacker News, please mention that in the subject line or email body!

Both roles are full remote, we do have flexibility regarding country, however there may be some countries we're not equipped to hire in. Though these roles are full time, we're also available to do contract type roles if necessary. Not interested in any recruitment help.

Featurebase | Full-stack Product Engineer | REMOTE (EU) | Full-time

Modern customers support & product feedback platform powering thousands of teams, including Lovable, Raycast, and n8n. Fully bootstrapped, profitable, and growing fast.

We’re building a full customer-facing suite where teams can handle their customer support, feedback prioritization, and product updates - all in one place.

We’re looking for a full-stack product engineer to own and ship core product features end-to-end, with a direct impact on Featurebase’s future.

Stack: NextJS + Typescript for the frontend, Node.js for the backend, MongoDB, Redis.

If you like small teams, autonomy, and shipping meaningful product work, we’d love to have you on board!

Apply here (we read every submission): https://go.featurebase.app/careers

Journee | Berlin, Germany, Europe | REMOTE (CET +/- 2h) | Full-time | https://journee.ai & https://ojin.ai/

==========

Journee is a technology startup founded in 2020. Our in-house low-latency streaming technology and GPU fleet orchestration systems are the engines behind our award-winning work with brands such as BMW, H&M, and Siemens.

We are now building and launching Ojin (https://ojin.ai/), a real-time generative AI platform for developers. Ojin provides the APIs and inference infrastructure for developers to build and scale interactive applications and AI agents. For this new venture, we are building a small, ambitious team of highly talented individuals and are hiring for the following position:

* Senior Product Engineer

* VP of Technology

Our tech stack: TypeScript, React, Python, PostgreSQL, WebRTC, AWS, Infrastructure as Code, Unreal Engine

Apply here: https://job-boards.eu.greenhouse.io/journee

Refurbed | Senior Data Scientist | Austria | EU remote | full-time

We're looking for a senior data scientist with marketplace experience for our very international remote first company in sustainable consumption.

https://www.refurbed.de/jobs/?gh_jid=4756814101

Modash.io | Multiple roles | Multiple locations | Full-time | Remote

• Modash is an end-to-end influencer marketing platform for Shopify stores.

• We help every creator earn a living.

• Tallinn is home. Europe is our lab. Canada joins the frontlines.

• 70+ person team, raised €11M in Series A funding, ARR growing 2x YoY.

• Millions paid out to creators to date.

—

Senior Product Engineer (Remote, Europe) https://apply.workable.com/modash/j/C1507B65C3/

Senior Backend Engineer (Remote, Europe) https://apply.workable.com/modash/j/D4FA5BA3E6/

Senior Machine Learning Engineer – LLM & Reinforcement Learning (m/f/d) €160.000+ | Full-Time | ONSITE

As a Senior Machine Learning Engineer at warmwind your work will drive our next-gen AI models, shaping the future of machine intelligence beyond traditional paradigms. You'll work with massive compute clusters (500+ H100 GPUs) and cutting-edge reinforcement learning techniques to create highly efficient, scalable, and groundbreaking AI systems.

Responsibilities: Design, train, and optimize Large Language Models (LLMs) from scratch Scale distributed training on massive GPU clusters (500+ H100 GPUs) Implement advanced reinforcement learning techniques (RLHF, adversarial self-play, real-time control) Develop high-performance architectures for multi-modal AI systems Build simulation environments for RL-based AI agents Optimize inference speed and efficiency for real-world deployment

Your Profile: Deep expertise in LLMs – you’ve built and trained large-scale models yourself Experience with large-scale distributed training on 500+ GPU superclusters Deep understanding of reinforcement learning, neural network optimization, and self-play methods Expert in PyTorch, TensorFlow, JAX & low-level optimization techniques (CUDA, Triton, DeepSpeed, etc.) Familiarity with high-performance computing (HPC, NVLink, InfiniBand, parallel computing) Strong publication track record in AI/ML research is a plus Relocation to Jena, Germany after initial onboarding

Language requirements: German or English

https://warmwind.com/careers/senior-machine-learning-enginee...

TantumPay | Java Developer / Web & React Native Developer | Europe (CET) | Remote | Full Time

We're a FinTech company reinventing high-risk-market payments with an integrated digital identity layer. Our team is expanding, and we are looking for a Senior Java Backend Developer and a Senior Web/React Native Developer.

We are fully remote, and we are looking for someone in the same timezone.

Backend: https://tantumpay.com/en/jobs/senior-java-backend-developer/ Frontend: https://tantumpay.com/en/jobs/mid-senior-web-react-native-de...

EnigmoFi | DevOps / SRE (Cloud & Infrastructure) | Remote | $192k + bonus

EnigmoFi is a crypto financial infrastructure startup building secure, scalable digital finance systems.

We’re hiring a senior DevOps / SRE to own and scale production cloud infrastructure.

Stack: AWS (primary), Kubernetes (EKS), Docker, Terraform (IaC), GitHub Actions, Prometheus/Grafana, Linux.

You’ll drive infrastructure automation, CI/CD, monitoring, incident response, and security best practices across environments.

Strong fit if you’ve operated high-availability infrastructure in crypto or digital asset environments (Coinbase, Paxos, Circle, Binance, OKX, Gemini, BitGo, Gnosis, The Graph, etc.).

mail: bayonleafolabi@enigmofi.com

Avanti | Gameplay Developer / Unreal Engine Developer | Stockholm, Sweden | Onsite/Hybrid | Full Time

Now we are looking for a Gameplay Developer / Unreal Engine Developer who wants to build the systems behind this experience.

This is not a feature-by-feature implementation role. It is a systems role.

You will work at the core of our real-time platform, designing and developing gameplay systems in Unreal Engine 5, using C++ and advanced Blueprints to create scalable, performance-optimized logic.

You will collaborate closely with animators and technical artists to ensure characters, props and animation behave seamlessly inside the engine.

The tech stack

    Unreal Engine 5
    C++
    Blueprint
    motion capture integration
    GCP

You have solid experience working with Unreal Engine and feel comfortable in both C++ and Blueprint architecture. You understand gameplay systems, animation logic and performance constraints.

We value accountability, curiosity and clarity.

Apply here: https://nordictechjobs.com/jobs/UMWwUb5WaZ

AI startup ILLUCIO正在寻找一位 Full-stack Engineer（全栈工程师） 我们两位创始人都是 NUS 校友，欢迎现场约coffee chat： 船长（Captain）： NUS 校友，大三休学全职创业中。AI 时代商业、产品与增长的连接者。两个月自学备考进入 NUS 哲学系，曾在 Accenture（埃森哲） 与 P&G（宝洁） 从事技术相关工作。近期 base 北京/上海。 陈小爷（Judy）：哈工大计算机本科 + NUS 理学硕士。AI 时代产品、技术与增长的连接者。小红书同名AI博主。近期base新加坡。 我们共同相信：学习、创造、品味与真诚。 Illucio 是一款注重心流体验而非简单提效的 AI 学习工具：我们用 AI 革新文本形式，帮助任何人更深、更全然地理解任何文本。 1.0 从哲学阅读的垂类出发，上线三天内用户量破 2000+。 2.0 正在迭代到通用学习场景，主要面向 海外 ToC 市场。 目前我们已经有：可用的产品形态、一个 6000+ 粉丝的产品账号、一些付费用户，以及融资资金。 我们正在寻找一位自我迭代速度极快的全栈工程师，把这些洞察与体验落地为一套安全、稳固、可规模化的系统。 如果你想加入的不是一份工作，而是一场真正的创造 —— 欢迎登船。 更多消息可关注： 小红书：ILLUCIO 公众号：乌卡船长 官网（电脑访问）：ILLUCIO.co

Onton.com | Fullstack & Research Engineers | San Francisco, CA | Hybrid Join us in pioneering the future of e-commerce search. 1M+ MAU growing rapidly. Large seed round raised from top-tier VCs and individuals with backgrounds from Google, Amazon, OpenAI, Stitch Fix, Whatnot, Stripe, and more.

We're a hard-working team of 10. We have an office in Jackson Square with a great view that we're looking to fill with other high-performance people!

Tech-wise, it's React/Typescript + Julia, if that's interesting (no worries if you haven't used it). We've also built our own graph and vector DB to cope with the scale, and the foundations of a neuro-symbolic AI agent that learns more about the world on every search!

Job posting and more information here → https://onton.com/careers

We read and respond to every application.

Cenovus Energy Inc. | Senior Software Engineer | Full‑Time | ONSITE | Calgary, Alberta, Canada | Relocation Support | https://cenovus.wd3.myworkdayjobs.com/careers/job/CA-AB-Calg...?

We are hiring experienced Software Engineers to help accelerate delivery of AI solutions at our Energy company. We're looking for full-stack experience, multi-agent workflows, context engineering, agentic development.

Proficiency in Python, Ruby, SQL, JavaScript, frameworks (Rails, Django, Flask/Dash, etc.), AI (OpenAI API, Agno, LangChain, vector stores, RAG pipelines, etc.).

Full ownership of end‑to‑end systems - from problem framing through production - working directly with the team, and our stakeholders across the business on problems that matter.

Reach out through link in bio or apply through the link. No recruiters please.

Stellar Science | Hybrid (USA) Albuquerque NM, Washington DC (Tysons VA), Dayton OH | Full time, interns/co-ops | U.S. citizenship required | https://www.stellarscience.com

Company: We're a small scientific software development company that develops custom scientific and engineering analysis applications in domains including: space situational awareness (monitoring the locations, health and status of on-orbit satellites), image simulation, high power microwave systems, modeling and simulation, laser systems modeling, AI/ML including physics-informed neural networks (PINN), human body thermoregulation, computer vision and image processing, high performance computing (HPC), computer aided design (CAD), and more. All exciting applications and no CRUD. We emphasize high quality code and lightweight processes that free software engineers to be productive.

Experience: Except for interns, we currently require a Bachelors degree in physics, engineering, math, computer science, or a related field. Masters or PhD is a plus. (Roughly 25% of our staff have PhDs.)

Technologies: Lots of C++23, Qt 6.9, CMake, git, OpenGL, CUDA, Boost, Jenkins. Windows and Linux, msvc/gcc/clang/clangcl. AI/ML and analysis projects use Python and C++. Web projects use Java and Typescript/React.

Apply online: at https://www.stellarscience.com/careers/.

Veeva is hiring upcoming 2026 new graduates computer science majors in the Bay Area for entry level software engineering roles. ONSITE 4 days/week in Pleasanton, CA and other locations. Apply here!

https://bit.ly/careers-veeva-us OR https://careers.veeva.com/job/8fe22df0-02b4-453d-919c-c8998c...

Signal 1 AI | Full Time | Hybrid (Toronto, Canada)

Signal 1 helps health systems accelerate AI adoption with a category defining technology platform. Signal 1’s first product, the AI Management System (AIMS), gives health system leaders visibility and control across their growing AI portfolios. AIMS offers comprehensive oversight of predictive and generative AI applications and introduces guardrails to mitigate downside risks. It sets the standard for Responsible AI in healthcare. Purpose-built for healthcare and informed by years of experience managing AI at scale in other industries, Signal 1 empowers healthcare organizations to translate innovation into real clinical, operational, and financial outcomes.

Signal 1 is a 30-person, well-funded and rapidly growing startup with strong product market fit and deployments at a growing number of top-20 US health systems.

We are currently looking for Senior Full Stack Engineers and Senior Software Developers

https://signal1.bamboohr.com/careers/39

https://signal1.bamboohr.com/careers/40

If interested, please contact us at bo@signal1.ai.

Innolitics | Software Engineering | Remote (Continental US) | Full Time

Innolitics is a remote-first company specializing in medical device software development and FDA regulatory consulting. Since 2012, we’ve partnered with medical device companies to bring innovative technologies to market. Our team of engineers, consultants, and domain experts works at the intersection of software engineering and regulatory compliance to deliver high-quality solutions.

As an engineer here, you will not only write production code, but also develop expertise in medical device regulations, quality systems, verification and validation, and the realities of FDA-facing software.

If you’re excited by the intersection of technology, medicine, and regulation—and enjoy organizing and clarifying complex information—you’ll feel at home here.

Roles currently available:

Senior Web/Mobile Medical Device Engineer : https://innolitics.com/join/senior-web-mobile-medical-device...

Physician-Scientist (MD/PhD) – Biostatistics & AI Software Development for Medical Device AI : https://innolitics.com/join/physician-scientist-md-phd--bios...

To apply, view the URLs and follow the instructions at the bottom of the page.

Anterior | Software Engineers | NYC | Onsite | Full Time

Anterior is improving the experience of healthcare for everyone. Our agentic orchestration platform makes clinical decisioning frictionless for RNs and MDs.

About You: You have a passion for doing things The Right Way, you believe Less is More, you want to focus on Foundations of system design and architecture (pacelc, consistency guarantees), you care as much about what code you do not write, you’re tired of the hype treadmill and care about the fundamentals. You have battle scars from overengineered and underperforming slop, and you care about writing code that lasts.

- Langs: TS / Python

- Infra: Nix, CDKTF, AWS

We’re hiring from infra to full stack. Come share your proudest firefighting story with us in an interview, bring your GitHub, and let’s see if we’re a good fit!

Dev log: https://xn--xp5a.anterior.app

saul@anterior.com

P.S. We're hosting the NYC Nix meetup on 3/18. Come along to meet the team.